The Heroic map pack contains three new maps, each presenting a totally different play style. Standoff's symmetrical valley, with its entrenched bases and fields of boulders is ideal for mid-sized objective and Slayer game types, while Rat's Nest's vast, labyrinthine passages bring something quite new to the Halo multiplayer experience – an indoor vehicle paradise, strongly influenced by the Campaign mode ideal for big team battles. Finally, Foundry is the ultimate Forge map – players can edit every single object in this voluminous industrial warehouse, place stairways, walls, bridges and tunnels to create an entirely new play space and build almost any kind of map they can think of.
All this great new mappage (is that word I just made up?) can be all yours for the low low price of 800 MS points. Of course you can wait the usual 6 or 8 months or whatever it is and the maps can be free. If you want to wait that is. Enjoy the new maps folks.